This is an SD 2.1 version of my SD 1.5 Winter Style; a Textual Inversion Style Embedding trained on images of a snowy winter forest/cabin scene. You can get amazing winter colors and snow effects in your images by calling Style-Winter in the positive prompt.
If you need the effect to come through stronger, try doubling up the Style-Winter trigger words, or moving them closer to the front of the prompt.
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